Automatic speed-regulating device for railroads.



0. JAMES.

AUTOMATIC SPEED REGULA'IING DEVICE FOR RAILROADS.

APPLICATION FILED FEB. 24, 1912.

Patented Dec. 31, 1912.

WITNESSES.

'aiihaiiah q city, eoimty zue invented c ising a reel: shalfi pivoted. in suitabie hear- 7 *ements in Aiit- 54s a specine speed 3 .shait aei mailed in hearings a a on iii atieir'pi if 11 Riel eizi 11i111 $h1' from reehn; t i 1 engaging arm info Opera tive pusition, and an actuating device @0111- ings and provided "with a plurality of afms, she-0f which extem's int-0 the path of ihe train so as to be iion caerie? thei'eb iiig and releasing eiaxi'e the train enga i operative posi'bien v A blow of given force struck hen the same 03-: in other Words when a moving at a speed at or above a predetermine speed strikes such acti ating arm, a'mther rm Weighted in any suiiahle manner t0 retard the'pivofcal movement of the ruck a suitabie projecy ano'h "1 arm for engagt i y iming arm and means tor shifting the Weight arm to vary the retardin' thereeff in the acwmpanyin similar reference .zesponding pae-zs threu views, Figure l is a si vice embodying my im end new 03:" The device shown in F' i 3 f is a plan View OI the device shown in i .g u 1; Fig. 4L is side elevation 01' a modliieei .2 3

1.01111 01 device embodying my invention;

and F 5 is a sicie eievaeion of another medified fomi,

T iiel'ei'ring to rigs. these dim" design: i

I filCiS A" A and pioviuei at one end Wi arm (1 extending at )SLillliilii right glee thereto andp aided at its other end \vi h aha-r111 exiiending at right in the oppesite direction. and in surastantialiy the same plane as. the arm (L The arm a is provided with a Weighfi (1 @bvieusiy ii the weighted arm is permitted to fail by 1 gravity the arm at the opposite end 0f the rock shaft a WI iii rocked into vertical Oi opeiative position and into the path ofa train In 0rd t0 retain this arm in its RUEIZIHi, horizontal, e1 inoperaiive pesii'ion 1 preferably empley a trigger device CO11X- ai'isiiw as ii'hisirated in an ular levei' i3 1, a .v e 7 pivot 06% intermediate its emis in a nearing a) si'ande r: i" s shown ll-1e angular lever B is prevented from rotating in one directien meme of a stop Z) seeurefi suitable manner. One end of such lever engages the arm a of the train stop device and retains the same in horizontal position and out of the path of the train. The end or too oi the lever engaging such arm is prevented, from moving downwardly by means the stop device 32 but as will be OlfWlU'llS it' the other end of the lever B ,is de nrcssed the toe at the opposite end will partially lift the weighted. arm and ride by the same, thus permitting the weighted arm to drop and causing the arm a to move into the path of the train.

My preferred form of device for releasing the trigger to permit the train stop device to be swung into operative position is shown in Figs. 1, 2 and 3 and will now be described. In said figures a shaft C is pivoted in suitable bearings c c and is provided with a plurality of arms C C and C fixed thereon extending radially therefrom. lhe shaft and arms are permitted to rotate in one direction only being prevented from rtating in the opposite direction by means of a stop 0 on the standard G. its shown the arm O is secured to the shaft C and extends without an inclosiiig casing D and projects into the path of a projection E, carried by the train or other vehicle F. When the arm W is struck obviously the shaft will be rotated, carrying the arms C therewith. 'lhe arm C extends into the path of the trigger B and when the arm C is Struck a blow oi": a given force the arm C will ongage the trigger B to actuate the train stop. 'lhe arm C extends as shown in the opposite direction from the arm C and is provided with a weight 0 threaded on a screw thread 0 on the arm U, thus providing mains to shift the weight toward or away "from the pivot to vary the retarding etl'ect of such weight on the pivotal movement of the shaft C.

The operation of the device thus described is as follows: The actuating device is set in such relation to the trigger that when a blow of predetermined force or velocity is administered to the lever C it will rotate given distance, engage and release the trigger to permit the train stop to swing into operative position. Of course a train going at a given velocity will always admincr a given blow to a lever set in a given position. and consequently my actuating lever may be so proportioned and positioned relatively to the trigger that a train moving" at or above a predetermined rate of speed and striking the lever at such Speed will cause the trigger to release the train stop o and swing the same into operative position in advance of the train.

In Fig. 4 l have shown a modified term intense Figs. 1, 2 and 3 and such description need not here be repeated. in this figure an angular lever Gr, having arms G is pivoted at g upon a suitable standard H and the arms G G as shown are arranged at an ai'tgle of over in and are pivoted at the meeting point thereof. The arm ll extends into the path of the tra and the arm. G is provided with a weight Qidingly mounted thereon. it trigger device ll comprising an angular lever having arms pivoted inter mediate its ends and arms are pivoted on a standard d and one end of such lever J engages the weighted arm oi oi the t'ain stop device and holds such arm in horizontal. or suspended. position and retains the actuating arm 0: out of its operative position. Vvhcu the arm til is struck by a train it will rotate upon the pivot g and will cause the weighted arm (3 to be swung upwardly and the weight 9 will be swung outwardly on said arm G by centrifugal force. The levers G and J are so positioned that when the weight slides outwardly from centrifugal force a sutlicient distance, it will strike the trigger arm and cause the weighted arm a? to be released thus rocking the shaft to move the arm a into operative position to stop the train.

in Fig. 5 l have shown another actuating device comprising the guiding sleeve L inclined in relation to the plane of the track. lVithin the guiding sleeve L l arrange a slide M prox' idcd with a projecting arm at extending into the path of the train through a slot (Z in the inclosing casing D5. To the end. of the slide It attach in any suitable manner a cord N which eaten rearwardly over a pulley l and a weight il is secured to the other end of such cord able distance from the slide 1 l pivot a trigger device having one arm g extend ing into the path the slide and its other arm q supporting the weighted arm a in a manner similar to that above described. it hen a train mo /in at or above a prede' termined rate-oi ed strikes the project ing arm m a blow sutlieient to move the trigger 9 out of engagement with the arm a it will permit said arm to swing into operative position to stop or signal the train.

Having described my invention, lt claim:

1.. A track device for the purpose specitied, embodying a member adapted. to swing into operative position, means for retaining the same in inoperative position and means in the path of the train and operable by a blow of predetermined velocity delivered by the train for releasing said swing:- ing" member. y

2v ln combination with a track train stop comprising aroclr shaft of suitable length extending parallel to the track and having; an arm at its't'orward end extending at substantially a right angle thereto, means it a suiting said arm to swing into operative posi-' tion in advance of the train.

3. The combination with a rock shaft suitably pivoted and extending parallel to the railroad track, an arm at one end of said rock shaft for engaging speed-controlling mechanism on the train; and means at the other end thereof for automatically rocking said arm intmupright operative position; a trigger device retaining said arm in inoperative position, a pivoted actuatingdevice locate contiguous to the track, having an arm extending into the path of the train and another arm for engaging and releasing the aforesaid trigger device when the first arm is struck a blow of predetermined velocity by the train, and means for varying the extent of oscillation of said re-. leasing arm.

In witness whereof, I have hereunto set my hand to the foregoing specification in the presence oftwo subscribing witnesses. CHARLES JAMES.

Witnesses:

FREDERICK P. RANDOLPH, HELEN V. HOLMES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.? 

